Yeah.... I'd say not normal too. Could also be a symptom of depression too, though. Unless its a problem though, I might let it slide. Her doc will almost certainly ask about how she's sleeping.
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It is a melancholy of mine own, compounded of many simples, extracted from many objects, and indeed the sundry contemplation of my travels, in which my often rumination wraps me in a most humorous sadness. -- William Shakespeare